如何实现Django Admin外键的Add按钮？

from django.db import models

class SourceModel(models.Model):
    # 定义源模型的字段

class TargetModel(models.Model):
    source = models.ForeignKey(SourceModel, on_delete=models.CASCADE)
    # 定义目标模型的字段

from django.contrib import admin

class TargetModelInline(admin.TabularInline):
    model = TargetModel

@admin.register(SourceModel)
class SourceModelAdmin(admin.ModelAdmin):
    inlines = [TargetModelInline]
    # 定义源模型的其他配置